Landslide hazard mapping in the Chugoku Region using AHP method and GIS

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  • AHP法およびGISを用いた中国地方における地すべりハザードマッピングの試み
  • AHPホウ オヨビ GIS オ モチイタ チュウゴク チホウ ニ オケル ジスベリ ハザードマッピング ノ ココロミ

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<p>  This study suggested landslide hazard mapping method in the Chugoku Region using analytic hierarchy process (AHP) method and geographic information system (GIS). A landslide hazard assessment system for landslides used here is based on landslide distributions of about 16,000 places in the Chugoku Region, Japan. We considered relationship between landslide distribution and factor of landslide hazard (elevation, slope angle, slope type, catchment degree, geology and vegetation). These relations are introduced to pairwise comparisons of factors in the AHP method. Landslide hazard rank is evaluated based on AHP. A landslide hazard map is created based on the landslide hazard rank of Ⅰ－Ⅴ. The landslide distributions are almost consistent with the landslide hazard rank. These results provide a practical method that will be useful for evaluating landslide hazards.</p>

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